Speed device for seeding-machines.



' No. 8132734. y E'ATENTED EEB'. 2%, 190e. E. E. BECKHAM D G. P. DATES. SPEED DEVICE EDE SEEDING MACHINES.

PLIGATION FILED OCT. 23.1995.

\` ll/III mm Will/I 31 wanlfow NITEI) STATES PATENT OFFICE.

lihANK R. PAOKHAM AND GEORGE I. OATES, OF SPRINGFIELD, Olll()` ASSIGNORS TO AMERICAN SEEDING MACHINE COMPANY, OF .HCl-- SEY CITY, NEW JERSEY, A CORPORATION OF NEW JERSEY.

SPEED IDEVICE FOR SEEDING-MACHINES.

Specification of Letters Patent.

Patented Feb. 27, ieee.

Application filed October 2S, 1905. Serial No. 283,917.

i cient and which will give to the seed-feeding devices a greater range 'of speeds than the devices in common use, thus increasing the scope of the work to which thesedevices may be applied.' Y

With thevabove primary and other incidental objects in view the invention consists of the vstructure,fth e parts and combination thereof, or-their equivalents, hereinafter described, .'and set forth in the claims.

Referringto the'drawings, Figure 1 is an elevation showing the variable-speed devices constituting the driving connection between the main drive-'shaft of a seeding-machine and the drive-shaft common to the feed devices. Figs. 2 and 3 are details of the stepped geanhereinafter described. Y

In the drawings, a is the hopperof the seeding-machine, of which a is the main drive-shaft,l which in the usual construction is the axle of the carrying-wheels.' Above this shaft andadjacent to the bottom of the hopper a is a second shaft a2, which constitutes the actuating mechanism for the various seed-feeding devices. On themain driveshaft c is mounted a gear-disk b, having multiple concentric sets of teeth adapted to engage a pinion t', slidino'ly mounted on a y counter-shaft b2, preferably formed square,

v which shaft is supported in suitable bearings in casting b3 t, located upon the 'main drive-shaft and the hopper, respectively,

.said construction being in commonA use.

Slidingly mounted near the upper end of the counter-shaft b2 is a stepped pinion c, having' two sets of teeth c c2, the set c being preferably twice the number of the set c2. Upon the shaft a? is a movable gear c3, with which the respective sets of gear-teeth of the pinion c are adapted to engages -1 Tof-iriaintalnthis ear c3l in engagement with the pinion c, we orm the upper ends of the teeth c at an angle, as shown at c4 in Fig. 3, and also provide a projecting rimflikewise beveled or angled, as shown at c5 in Figi "3. Th rim of the gear c3 is beveled to correspond, so that when the pinion is thrown into engagement with said gear the gear'will'be locked against longitudinal movement on its shaft.

In F10. 2 the gear cH is shown in mesh with the sma ler set c2 of gear-teeth, which may bel assumed to be the normal condition, or

adapted to drive the feedl devices through the normal range of speeds as determined by the adjustment of the pinion b with the geardisk b.

In'the drawings the gear-disk?) is s hown to have ten sets of teeth. Thus by shifting the pinion b', as hereinafter described, ten different speeds ma be given to the speed devices. However, un er certain conditions it is desirable to give to the seed-feeding devices an extraordinary speed which will increase the quantit of grain sown. This may be accomplis led by withdrawing the pinion c slightly and shifting the gear c3 laterally on the shaft c2, which will ermit the pinion c to be moved upward untilp c is in mesh with the vgear c, which will result in giving to the feed devices additional speeds 'which were Anot possible through the combination of the smaller step of the gear c and the gear-disk b, as before escribed. The

meshing of the respective steps of the pinion c and the gear c3 will not be theoretically correct; but it has been demonstrated'by eX- periments that the construction is practical for the work to be performed.

the set of gear-teeth In addition to being mounted on the shaft l b the pinion c has, through the mechanism of an extended hub .0 thereon, a bearinfr'in a bracketd, secured by a bolt d, and a slotted connection with the casting b4 on the hopper a., the said hub bein of the same length as the bearing d' of said racket. By this means the pinion c is shifted on the counter-shaft b and held in its adjusted position with either one of its stepped working surfaces, in mesh with the' gear c3, and the bracket d also forms, in effect, an adjustable and self-alining support or bearin for the shaft b2. f A j the shaftb2 to The pinion is shifted upon acters of the stern e2.

. pinion-s Y thereon and adapted to engage each of said gear-disk thereonvhaving a series of concenllaterallyfmovable on said shaft, and a gaged by said laterally-movable gear, subconcentric sets of teeth by a yoke e," adjustably secured by a setscreW-e to an indicatorstem e?. The stern e2 is provided with a se-M ries of. notches e, ladapted to be engaged bv an edge or rih on a keeper c, through whic said stem may be moved. A spring e? holds said stem in engagement with the edve of the keeper. The stem e2 is provided with a series of characters corresponding to the notchesje3 and indicating by-their relation with the keeper e1 the particular set of concentric teeth of the gearfdisk b.which is in engagement with the pinion b. In' assem bling the machine the yoke e is adjusted on the stem c2 by .means'oi the set-screw e to bring the pinion b into engagement with the set of concentric teeth indicated by the char- It will be seen that by theconstruction described ag'reater range is given to the quantity of seed Which may be sown, that additional or inoregadequate bearing and support is provided for the .upright or sliding aft, and, further, improved means for indicating the various adjustments of the speed device.

Having thus described our' invention, we claim- 1. In a device as described, a main shaft, a

tric sets ofgear-teeth, a counter-shaft,'a slid-A ofteeth on said disk, a driven shaft, a gear stepped pinion on said counter-shaft, the re-L spective steps ofwhich are adapted to-be enstantially as specified.

' 2. In a device as described, amain shaft, a gear-disk thereon having a series of concentric teeth, a counter-shaft', a 'sliding pinion sets of concentric teeth, a yoke engaging said pinion, va btem adjustably 'attached to said yoke having indicating characters thereon and notches in the edge tnereoic adapted to he engaged by a stationary projection, and a spring to hold said stem in its adjusted position, substantially as' specified.

3. In adevice as described, a 'main driving-shaft, a counter-shaft adapted to be driven at different rates of speed thereby, a stepped' pinion driven by said counter-shaft to transmit the movement thereof, and a shitting bracket adapted to support said stepped pin-- ion in different positions onsaid counter-sh ait bearing for said hub,l adapted to shift said pinion and ormf an Iadj estable' andl yself-alining support1ng-bearing for said coun ter-shait substantially as speeiiied.

5. Ina change-of-speed device, a driven.

shiftahle stepped pinion, a shiiitable gear driven by said pinion, and havinga beveledface on the rim thereof adapted 'to ahornately engagesimilai'lyi eveled faces on said pinion tolock said gear in meshing position substantiallyfas andl'or the purpose specified'.

In testimony whereof' weW-h'avo hereunto set our hands this 20th day iii-October, A; D.

FRANK R. Pii'cnifiiin.. GEORGE P. GATES.

Vtfitnesse's: v

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